A Search for Unusual X-ray Properties in High-z, High Accretion-Rate Quasars

Details A Search for Unusual X-ray Properties in High-z, High Accretion-Rate Quasars A Search for Unusual X-ray Properties in High-z, High Accretion-Rate Quasars

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop...81s&link_type=abstract

XMM-Newton Proposal ID #04020704

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Sbs 1425+606, Lbqs 0109+0213, Q 1318-113, 2Qz J023805.8-2, Xmm-Newton Proposal 04020704

Scientific paper

We propose to extend our XMM-Newton observations of extremely luminous, high accretion rate, radio-quiet quasars at z~2-3, by observing five additional sources of this class with a total exposure time of 175 ks. Combined with our XMM-Newton AO4 observations of two such sources, we will obtain accurate measurements of the spectral slope in the ~1.5-20 keV rest-frame band and look for X-ray variations in a sample of seven extreme quasars. Our prime goal is to test whether the X-ray spectral slope is an accretion-rate indicator for all AGN. Steep X-ray spectral slopes may identify our sources as the long sought high-z analogs of Narrow-Line Seyfert 1 galaxies.

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